Patents Assigned to STMicroelectronics Ltd.
  • Data source and display having power circuits providing different output voltages based on duty cycle
    Patent number: 9958919
    Abstract: An embodiment is a circuit for use with a display device, the circuit including: a first input node configured to be operatively coupled to a first port of a data source device that provides the display device with data, to receive a first direct voltage used for a real-time display of the data on the display device; and at least one output node, configured to operatively provide the display device with at least one output voltage generated based on the first direct voltage, wherein the first port is isolated from a data port used to transmit the data.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: May 1, 2018
    Assignees: STMICROELECTRONICS (SHENZHEN) R&D CO., LTD., STMICROELECTRONICS LTD.
    Inventors: Danny Sheng, Andy Lin, Johnny Yoon
  • Device and method for automatic color calibration in a laser scanning apparatus
    Patent number: 9942531
    Abstract: A color calibration device for a laser scanning apparatus includes a compensation unit configured to electronically compensate for positional errors of the three-color laser source. The compensation unit includes an emitted light detector configured to measure a power of an emitted light beam. A calibration unit coupled to the emitted light detector has a controller configured to generate a quantity correction value for the three-color laser source. A laser source control element is configured to generate a control quantity for the three-color laser source, based on the quantity correction value. A dominant color detector is configured to detect any dominant color in the light beam being projected and actuate the controller for the dominant color.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: April 10, 2018
    Assignee: STMicroelectronics LTd
    Inventor: Sason Sourani
  • RESONANCE MEMS MIRROR CONTROL SYSTEM
    Publication number: 20180067303
    Abstract: The present disclosure provides a system and method for controlling operation of a resonance MEMS mirror. The system and method includes activating either an in-plane or staggered MEMS mirror via sets of activation pulses applied to the MEMS mirror, detecting current at the MEMS mirror, generating a window for detecting a change in a direction of the current at the MEMS mirror, and terminating the window and the activation pulse if a change in the current direction is detected during the window. In some embodiments, two sets of activation pulses are applied to the MEMS mirror.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 8, 2018
    Applicant: STMicroelectronics Ltd
    Inventor: Sason Sourani
  • OPENING ANGLE MEASUREMENT OF AN OSCILLATING MEMS MIRROR
    Publication number: 20180024351
    Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.
    Type: Application
    Filed: October 3, 2017
    Publication date: January 25, 2018
    Applicant: STMicroelectronics Ltd
    Inventor: Offir Duvdevany
  • Electronic device including pico projector and optical correction system
    Patent number: 9864261
    Abstract: An electronic device includes a movable mirror system to selectively reflect an incident image projection beam traveling along a first path toward a second path different than a first path. The image projection beam displays a corrected image at a first location but would otherwise display an uncorrected image at a second location when the movable mirror system reflects the image projection beam toward the second path. The electronic device also includes an optical correction system having at least one corrective optic element to correct the image projection beam to display a corrected image at the second location when the movable mirror system reflects the image projection beam toward the second path.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: January 9, 2018
    Assignee: STMicroelectronics LTD
    Inventor: Tzvi Philipp
  • CIRCUIT FOR DETECTION OF FAILURE OF A MOVABLE MEMS MIRROR
    Publication number: 20170363506
    Abstract: Disclosed herein is a circuit for determining failure of a movable MEMS mirror. The circuit includes an integrator receiving an opening angle signal representing an opening angle of the movable MEMS mirror, and a differentiator receiving the opening angle signal. A summing circuit is configured to sum the integrator output and the differentiator output. A comparison circuit is configured to determine whether the sum of the integrator output and differentiator output is not within a threshold window. An indicator circuit is configured to generate an indicator signal indicating that the movable MEMS mirror has failed based on the comparison circuit indicating that the sum of the integrator output and differentiator output is not within the threshold window.
    Type: Application
    Filed: June 21, 2016
    Publication date: December 21, 2017
    Applicant: STMicroelectronics LTD
    Inventor: Sason Sourani
  • Opening angle measurement of an oscillating MEMS mirror
    Patent number: 9810902
    Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: November 7, 2017
    Assignee: STMicroelectronics Ltd
    Inventor: Offir Duvdevany
  • DEVICE AND METHOD FOR AUTOMATIC COLOR CALIBRATION IN A LASER SCANNING APPARATUS
    Publication number: 20170318271
    Abstract: A color calibration device for a laser scanning apparatus includes a compensation unit configured to electronically compensate for positional errors of the three-color laser source. The compensation unit includes an emitted light detector configured to measure a power of an emitted light beam. A calibration unit coupled to the emitted light detector has a controller configured to generate a quantity correction value for the three-color laser source. A laser source control element is configured to generate a control quantity for the three-color laser source, based on the quantity correction value. A dominant color detector is configured to detect any dominant color in the light beam being projected and actuate the controller for the dominant color.
    Type: Application
    Filed: March 14, 2017
    Publication date: November 2, 2017
    Applicant: STMicroelectronics Ltd
    Inventor: Sason Sourani
  • CONTROLLING OPENING ANGLE OF A RESONATING MIRROR
    Publication number: 20170307873
    Abstract: A device described herein includes a movable MEMS mirror, with a driver configured to drive the movable MEMS mirror with a periodic signal such that the MEMS mirror oscillates at its resonance frequency. A feedback measuring circuit is configured to measure a signal flowing through the movable MEMS mirror. A processor is configured to sample the signal at first and second instants, generate an error signal as a function of a difference between the signal at the first instant in time and the signal at the second instant in time, and determine the opening angle of the movable MEMS mirror as a function of the error signal.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Applicant: STMicroelectronics Ltd
    Inventor: Mark Kolodkin
  • Controlling opening angle of a resonating mirror
    Patent number: 9740002
    Abstract: A device described herein includes a movable MEMS mirror, with a driver configured to drive the movable MEMS mirror with a periodic signal such that the MEMS mirror oscillates at its resonance frequency. A feedback measuring circuit is configured to measure a signal flowing through the movable MEMS mirror. A processor is configured to sample the signal at first and second instants, generate an error signal as a function of a difference between the signal at the first instant in time and the signal at the second instant in time, and determine the opening angle of the movable MEMS mirror as a function of the error signal.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 22, 2017
    Assignee: STMicroelectronics Ltd
    Inventor: Mark Kolodkin
  • Package for a MEMS sensor and manufacturing process thereof
    Patent number: 9253579
    Abstract: A packaged MEMS device, wherein at least two support structures are stacked on each other and are formed both by a support layer and a wall layer coupled to each other and delimiting a respective chamber. The chamber of the first support structure is upwardly delimited by the support layer of the second support structure. A first and a second dice are accommodated in a respective chamber, carried by the respective support layer of the first support structure. The support layer of the second support structure has a through hole allowing wire connections to directly couple the first and the second dice. A lid substrate, coupled to the second support structure, closes the chamber of the second support structure.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: February 2, 2016
    Assignee: STMicroelectronics Ltd (Malta)
    Inventor: Kevin Formosa
  • Three-dimensional gesture recognition system, circuit, and method for a touch screen
    Patent number: 9164674
    Abstract: A touch controller is coupled to a touch screen and detects a first gesture at a first point on the touch screen. The first gesture includes physical contact of the touch screen by a user device at the first point. The touch controller detects a second gesture that is associated with movement of the user device from the first point to a second point on the touch screen. The second gesture includes detecting movement of the user device within a sensing range from the first point to the second point. The sensing range corresponds to an orthogonal distance from a surface of the touch screen. The touch controller detects a third gesture at the second touch point. The third gesture includes physical contact of the touch screen at the second touch point. Upon detecting the first, second and third gestures the touch controller performs a corresponding action.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: October 20, 2015
    Assignees: STMicroelectronics Asia Pacific Pte Ltd, STMicroelectronics Ltd
    Inventors: Chee Yu Ng, Jo Wang, Ravi Bhatia
  • Semiconductor integrated device assembly process
    Patent number: 8921164
    Abstract: A process for assembly of an integrated device, envisages: providing a first body of semiconductor material integrating at least one electronic circuit and having a top surface; providing a second body of semiconductor material integrating at least one microelectromechanical structure and having a bottom surface; and stacking the second body on the first body with the interposition, between the top surface of the first body and the bottom surface of the second body, of an elastic spacer material. Prior to the stacking step, the step is envisaged of providing, in an integrated manner, at the top surface of the first body a confinement and spacing structure that confines inside it the elastic spacer material and supports the second body at a distance from the first body during the stacking step.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: December 30, 2014
    Assignees: STMicroelectronics Ltd (Malta), STMicroelectronics S.r.l.
    Inventors: Kenneth Fonk, Luca Maggi, Jeremy Spiteri
  • THREE-DIMENSIONAL GESTURE RECOGNITION SYSTEM, CIRCUIT, AND METHOD FOR A TOUCH SCREEN
    Publication number: 20140295931
    Abstract: A touch controller is coupled to a touch screen and detects a first gesture at a first point on the touch screen. The first gesture includes physical contact of the touch screen by a user device at the first point. The touch controller detects a second gesture that is associated with movement of the user device from the first point to a second point on the touch screen. The second gesture includes detecting movement of the user device within a sensing range from the first point to the second point. The sensing range corresponds to an orthogonal distance from a surface of the touch screen. The touch controller detects a third gesture at the second touch point. The third gesture includes physical contact of the touch screen at the second touch point. Upon detecting the first, second and third gestures the touch controller performs a corresponding action.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 2, 2014
    Applicants: STMicroelectronics Ltd., STMicroelectronics Asia Pacific Pte Ltd.
    Inventors: Chee Yu Ng, Jo Wang, Ravi Bhatia
  • Method for strip testing of MEMS devices, testing strip of MEMS devices and MEMS device thereof
    Patent number: 8748291
    Abstract: A method for testing a strip of MEMS devices, the MEMS devices including at least a respective die of semiconductor material coupled to an internal surface of a common substrate and covered by a protection material; the method envisages: detecting electrical values generated by the MEMS devices in response to at least a testing stimulus; and, before the step of detecting, at least partially separating contiguous MEMS devices in the strip. The step of separating includes defining a separation trench between the contiguous MEMS devices, the separation trench extending through the whole thickness of the protection material and through a surface portion of the substrate, starting from the internal surface of the substrate.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 10, 2014
    Assignees: STMicroelectronics S.r.l., STMicroelectronics Ltd (Malta)
    Inventors: Mark Anthony Azzopardi, Conrad Cachia, Stefano Pozzi
  • Compact RF isolation network for multi-pin packaged integrated circuits
    Patent number: 8598962
    Abstract: Pins on an RFIC package carry RF signals between the package and a PCB. A first capacitor is coupled between a selected pin of the RFIC package near the pins carrying the RF signals and a radio-frequency ground on the PCB. A coupling between the RFIC package and the PCB is modeled, and includes modeling of the pins of interest and at least one parasitic element of the coupling. A capacitance of the first capacitor is selected based on the modeling to obtain desired performance at selected operational frequencies. A second capacitor may be coupled between the selected pin a radio frequency ground of the RFIC package. An inductor may be coupled in parallel across the first capacitor.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: December 3, 2013
    Assignee: STMicroelectronics Ltd.
    Inventor: Oleksandr Gorbachov
  • Electronic device for receiving a radio-frequency signal
    Patent number: 8582702
    Abstract: An electronic device includes an analog-to-digital converter adapted to receive a radio-frequency signal and adapted to provide therefrom a digital signal, wherein the radio-frequency signal may include an interference signal. The electronic device has a controller adapted to perform a digital measure on the digital signal and adapted to generate therefrom a selection signal having a first value indicating a non-interference condition in the radio-frequency signal and having a second value indicating an interference-condition in the radio-frequency signal. A selector is adapted to transmit the digital signal in case the selection signal has the first value and to transmit a signal replacing the digital signal in case the selection signal has the second value.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: November 12, 2013
    Assignees: STMicroelectronics S.r.l., STMicroelectronics Ltd.
    Inventors: Giuseppe Avellone, Oleksandr Gorbachov, Antonino Calcagno, Salvatore Scaccianoce
  • Wireless LAN data rate adaptation
    Patent number: 8547841
    Abstract: A WLAN communication system and algorithm that adaptively changes the data transmission rate of a communication channel based on changing channel conditions. The WLAN communication system or algorithm has two modes being a searching mode and a transmission mode. Furthermore, the WLAN communication system or algorithm incorporates an additive increase, multiplicative decrease (AIMD) function into the rate adaptation algorithm.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: October 1, 2013
    Assignee: STMicroelectronic Ltd. (Hong Kong)
    Inventor: Mounir Hamdi
  • SEMICONDUCTOR INTEGRATED DEVICE ASSEMBLY PROCESS
    Publication number: 20130214368
    Abstract: A process for assembly of an integrated device, envisages: providing a first body of semiconductor material integrating at least one electronic circuit and having a top surface; providing a second body of semiconductor material integrating at least one microelectromechanical structure and having a bottom surface; and stacking the second body on the first body with the interposition, between the top surface of the first body and the bottom surface of the second body, of an elastic spacer material. Prior to the stacking step, the step is envisaged of providing, in an integrated manner, at the top surface of the first body a confinement and spacing structure that confines inside it the elastic spacer material and supports the second body at a distance from the first body during the stacking step.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 22, 2013
    Applicants: STMICROELECTRONICS S.R.L., STMICROELECTRONICS LTD (MALTA)
    Inventors: STMicroelectronics Ltd (Malta), STMicroelectronics S.r.l.
  • VIDEO IMAGE CAPTURE AND PLAYBACK FOR DISPLAY DEVICES
    Publication number: 20130170820
    Abstract: A display controller integrated circuit (IC) is disclosed. The display controller IC includes a video interface that receives an image for real time display on a display. The display controller IC further includes means that is configured to store the image on a data storage device so that it can be displayed again at a later time. A display device including the display controller IC and a method of capturing and displaying images are also disclosed.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: STMicroelectronics Ltd.
    Inventors: Einstein CHENG, Louis FENG